Spot Forecast
Issued by NWS Milwaukee/Sullivan, WI

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000
FNUS73 KMKX 211250
FWSMKX

Spot Forecast for Sw grass rx...WI DNR
National Weather Service Milwaukee/Sullivan WI
750 AM CDT Thu Mar 21 2024

Forecast is based on ignition time of 1200 CDT on March 21.

Please contact the National Weather Service if conditions become
unrepresentative or if you have questions/concerns about this forecast.

.DISCUSSION...

Light winds, cool conditions, and cloud cover will keep mixing
heights around 4500 ft this afternoon. Min RH values around 32
percent are expected with dry air lingering in low levels through
the day. Accumulating snowfall is expected late tonight, lingering
into Friday.

.REST OF TODAY...

Sky/weather.........Cloudy (85-95 percent).
Temperature.........32 at ignition...Max 38.
RH..................36 percent at ignition...Min 32 percent.
Wind (20 ft)........Winds southeast at 2 mph at
                    ignition...otherwise Light winds.
Mixing height.......4200 ft AGL at ignition...otherwise 4500 ft
                    AGL.
Transport winds.....Southwest 5 to 6 mph.
Smoke dispersal.....Fair /16700 knot-ft/ at ignition. Max...fair
                    /22500 knot-ft/.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 5.

TIME (CDT)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........97  96  95  92  89  87
Weather cov.....
Weather type....
Tstm cov........
Temp............32  34  35  36  37  36
RH..............36  33  35  35  35  38
20 FT wind dir..SE  SE  S   S   SE  SE
20 FT wind spd..2   2   2   3   3   4
20 FT wind gust.6   5   6   6   6   6
Mix hgt (kft)...4.2 4.4 4.5 4.5 4.5 4.3
Transp wind dir.SW  SW  SW  SW  S   S
Transp wind spd.5   6   5   6   6   6
Haines index....5   4   4   4   4   4
SDspl kt-ft/100017  22  18  23  23  22

.TONIGHT...

Sky/weather.........Cloudy (90-100 percent). Chance of snow
                    overnight. Snow overnight.
Temperature.........Min 28.
RH..................Max 100 percent.
Wind (20 ft)........Southeast winds 5 to 8 mph.
Mixing height.......900 ft AGL.
Transport winds.....Southeast 6 to 9 mph increasing to 13 to 17 mph
                    in the late evening and overnight.
Smoke dispersal.....Fair (18500 knot-ft) early in the evening
                    decreasing to poor (6100 knot-ft) late in the
                    night.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........93  97  94  95  95  98  98  100 100 100 100 100
Weather cov.....                        CHC CHC DEF DEF DEF DEF
Weather type....                        SN  SN  SN  SN  SN  SN
Tstm cov........
Temp............36  35  34  33  32  32  31  30  29  29  29  29
RH..............40  43  47  53  58  61  69  75  81  85  85  88
20 FT wind dir..SE  SE  SE  E   E   E   SE  SE  E   E   E   E
20 FT wind spd..5   5   5   6   6   6   8   8   7   7   8   8
20 FT wind gust.6   7   10  10  11  13  14  14  14  14  14  14
Mix hgt (kft)...3.7 1.2 0.9 1.0 1.1 1.0 1.2 1.2 1.2 1.2 1.1 1.0
Transp wind dir.S   S   SE  SE  E   SE  SE  SE  SE  SE  E   E
Transp wind spd.6   7   8   9   13  16  17  17  15  15  16  15
Haines index....4   3   3   3   3   3   3   2   2   2   2   2
SDspl kt-ft/100019  7   6   8   12  13  18  18  16  16  15  14

.FRIDAY...

Sky/weather.........Cloudy (95-100 percent). Snow in the morning.
Temperature.........Max 36.
RH..................Min 80 percent.
Wind (20 ft)........Southeast winds 5 to 9 mph with gusts to around
                    16 mph in the morning becoming light, then
                    becoming north 6 to 7 mph late in the
                    afternoon.
Mixing height.......2000 ft AGL.
Transport winds.....Southeast 13 to 20 mph shifting to the east 7
                    to 9 mph early in the afternoon, then shifting
                    to the north 13 to 15 mph late in the
                    afternoon.
Smoke dispersal.....Poor (9200 knot-ft) early in the morning
                    increasing to fair (25500 knot-ft) in the
                    afternoon.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........100 100 100 100 100 100 100 100 100 100 99  95
Weather cov.....DEF DEF DEF DEF DEF DEF DEF
Weather type....SN  SN  SN  SN  SN  SN  SN
Tstm cov........
Temp............29  29  29  30  31  31  32  33  34  35  35  34
RH..............92  96  100 96  96  96  96  92  89  85  89  89
20 FT wind dir..E   E   E   SE  SE  SE  E   E   N   N   N   N
20 FT wind spd..8   9   8   8   8   6   5   3   4   6   6   7
20 FT wind gust.14  14  16  14  14  12  10  6   8   10  13  14
Mix hgt (kft)...1.0 1.0 1.2 1.2 1.2 1.3 1.4 1.5 1.7 1.8 2.0 1.6
Transp wind dir.E   E   E   E   SE  SE  E   E   E   N   N   N
Transp wind spd.15  17  20  18  18  17  13  7   9   13  15  15
Haines index....2   2   2   2   2   2   2   3   3   3   3   3
SDspl kt-ft/100014  15  20  19  19  19  16  9   13  20  26  21

$$
Forecaster...MH
Requested by...Nate Fayram
Type of request...PRESCRIBED
.TAG 2408059.0/MKX
.DELDT 03/21/24
.FormatterVersion 2.0.0
.EMAIL Nathan.fayram@wi.gov


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